摘要:
A process for preparing a lubricating oil basestock (43) having good low temperature properties is disclosed. The process includes contacting a feed (15) with a first amorphous isomerization catalyst (21) having a pore volume less than 0.99 ml/gm (H2O), an alumina content in the range of 30-50 % based on the isomerization catalyst and an isoelectric point in the range of 4.5 to 6.5. The isomerization step is followed by a catalytic dewaxing step using an intermediate pore crystalline molecular sieve (39) to produce a product (43). A further embodiment includes a first amorphous isomerization catalyst having a pore volume less than 0.99 ml/gm (H2O), an alumina content in the range of 30-50 % based on the isomerization catalyst wherein the silica is modified with a rare earth oxide, yttria, boria or magnesia and an isoelectric point greater than but no more than 2 points greater than that of the base silica alumina.
摘要:
The invention is directed to a Fluid Catalytic Cracking process conducted in a fluid catalytic cracking unit (FCCU) comprising one or more risers, each of said risers having a plurality of injection nozzles therein and at least one reaction zone therein comprising the steps of spatially nonuniformly injecting a plurality of feeds wherein said plurality of feeds comprises at least one feed (α) and at least another feed (β), wherein said feeds (α) and (β): (a) differ in Conradson Carbon Residue by at least about 2 wt.% points or (b) differ in hydrogen content by at least about 0.2 wt.%; or (c) differ in API gravities by at least about 2 points; or (d) differ in nitrogen content by at least about 50 ppm; or (e) differ in carbon-to-hydrogen ratio by at least about 0.3; or (f) differ in mean boiling point by at least about 200 °F; and wherein said spatially nonuniform injection is accomplished by (i) simultaneously injecting into a single reaction zone of a single riser said feed (α) from at least one injection nozzle of said riser and said feed (β) from the remaining nozzles of said riser; (ii) simultaneously injecting said feed (α) into at least one of said reaction zones of said riser of said FCCU and said feed (β) into another of said reaction zones of said riser of said FCCU; or (iii) simultaneously injecting said feed (α) into at least one riser of said FCCU and said feed (β) into a second riser of said FCCU. Wherein when said spatially nonuniform injection is accomplished by (iii), said feeds are substantially non-paraffinic feeds.
摘要:
Multifonctional molybdenum compounds, which are the reactive product of molybdenum dithiocarbamates and metal dihydrocarbyl dithiophosphates, are new compositions which are useful as lubricant additives. They impart to the lubricant formulations to which they are added low friction and excellent wear properties at reduced phosphorous concentrations.
摘要:
The present invention is directed to a Fluid Catalytic Cracking process conducted under fluid catalytic cracking conditions by injecting into at least one reaction zone of a fluid catalytic cracking unit (FCCU) having one or more risers, a plurality of feeds wherein said plurality of feeds comprises at least one feed (α) and at least another feed (β) wherein said feeds (α) and (β) (a) differ in Conradson Carbon Residue by at least about 2 wt % points; or (b) differ in hydrogen content by at least about 0.2 wt %; or (c) differ in API gravities by at least about 2 points; or (d) differ in nitrogen content by at least about 50 ppm; or (e) differ in carbon-to-hydrogen ratio by at least about 0.3; or (f) differ in mean boiling point by at least about 200 °F; and wherein said feeds (α) and (β) are alternately injected and wherein said alternate injection maintains said risers in a cyclic steady state, while the rest of the FCC unit is in a steady state.
摘要:
A process for producing a high VI/low volatility lubricating oil basestock. The process comprises subjecting the raffinate from a solvent extraction step (40) to a two-step, single-stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate (42) followed by a cold hydrofinishing step (50). The effluent from the cold hydrofinishing step (52) in then catalytically dewaxed or in the alternative, solvent dewaxed followed by catalytic dewaxing (60).
摘要:
A process for producing a lubricating oil basestock having at least 90 wt.% saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone (20) to a two step hydroconversion through a first hydroconversion unit (42) to a second hydroconversion unit (52) followed by a hydrofinishing zone (60) and a dewaxing zone (74).